Many creative writers I've read say that this kind of issue isn't block, it happens because you're not "ready" to write this bit yet, for any number of values o

Many creative writers I've read say that this kind of issue isn't block, it happens because you're not "ready" to write this bit yet, for any number of values of "ready". It can apply to coding as well, I expect. In writing, it often happens because you've failed to plan. You don't know what to write next because you have no idea where the story is going next, and you'll be able to carry on once you've figured that out. There are exercises to get through this, which include going off and writing something altogether different. Letting your subconscious work on something for a while can work wonders.